Beryllia (BeO) Crucibles – Extreme Thermal Conductivity (325 W/m·K), Working Temperature up to 2000°C, Chemically Stable Against Molten Metals & Alkali
Beryllium Oxide (BeO) ceramic crucibles are the **premium choice for ultra-high-temperature melting applications** where purity, thermal shock resistance, and chemical inertness are non-negotiable. With **thermal conductivity of 325 W/m·K** (second only to diamond) and a **melting point of 2507°C**, BeO crucibles outperform alumina, aluminum nitride, and zirconia in extreme environments.
Coraynic Technology manufactures **99.5% high-purity BeO crucibles** (Model B-995) for the melting of **rare metals, precious metals (platinum, palladium, gold, silver), and specialty alloys**, as well as for **semiconductor crystal growth (GaAs, InP, SiC)** and **nuclear material processing (uranium, plutonium)** .
Our crucibles are available in **custom inner diameter (ID), outer diameter (OD), height, wall thickness, and lid configurations**. Each crucible is precision CNC ground to tight tolerances and undergoes **100% quality inspection** (ICP purity analysis, dimensional verification, air tightness testing).
With **excellent alkali resistance**, **no wetting behavior**, and **zero contamination** of melts, BeO crucibles ensure **high yield and purity** in critical melting and casting processes.
## Key Features & Benefits
– **Extreme Thermal Conductivity:** 325 W/m·K @25°C – 13× higher than alumina, 1.8× higher than AlN – eliminates hot spots, ensures uniform melting.
– **Ultra-High Melting Point:** 2507°C (4545°F) – continuous operation up to 2000°C.
– **Exceptional Thermal Shock Resistance:** Qualified for rapid heating/cooling cycles – no cracking.
– **Chemical Inertness:** Resistant to molten metals, alkalis, acids, and glazes. No wetting, no contamination.
– **High Purity:** 99.5% BeO – minimal impurity pickup in precious metal melting.
– **Custom Geometry:** Cylindrical, conical, stepped walls, flat/round bottom, pouring spouts, flanged rims.
– **Lid Options:** Loose-fitting or hermetic sealing lids available.
– **Precision Tolerances:** OD/ID ±0.5%, height ±0.1 mm, concentricity <0.05 mm.
– **Surface Finish:** As fired, ground, or polished (Ra 0.2–0.8 μm).
– **Metallization Available:** MoMn + Ni/Au plated rims for brazing and mounting.
– **Nuclear Grade:** Low neutron capture cross-section, high moderating ability – suitable for uranium/plutonium processing.
## Technical Specifications (B-995 BeO Crucible – 99.5%)
| Property | Unit | Value |
|———-|——|——-|
| Model No. | – | B-995 ceramic crucible |
| Purity | % | 99.5% BeO |
| Grade | – | B-99.5 |
| Density | g/cm³ | 2.88 |
| Color | – | White |
| Melting Point | °C | 2507 ±10 |
| Boiling Point | °C | 3900 |
| Maximum Working Temperature | °C | 2000 (continuous) |
| Thermal Conductivity (25°C) | W/m·K | 325 |
| Thermal Conductivity (100°C) | W/m·K | 220 |
| Dielectric Constant (1MHz) | – | 6.6 ±0.2 |
| Dielectric Constant (10GHz) | – | 6.8 ±0.2 |
| Dissipation Factor (1MHz) | – | ≤4×10⁻⁴ |
| CTE (25–500°C) | ×10⁻⁶/°C | 7.0 – 8.0 |
| Volume Resistivity (25°C) | Ω·cm | >10¹⁴ |
| Electrical Resistivity | Ω·m | 13×10^x |
| Dielectric Strength (DC) | kV/mm | ≥40 |
| Flexural Strength | MPa | ≥200 |
| Tensile Strength (Ultimate) | MPa | 140 |
| Compressive Strength | MPa | >350 |
| Poisson’s Ratio | – | 0.26 |
| Young’s Modulus | GPa | 350 |
| Specific Heat | J/kg·K | 1050 |
| Grain Size | μm | 10 – 20 |
| Surface Roughness (Ra) | μm | 0.2 – 0.8 (as ground); <0.1 (polished) |
| Air Tightness | Pa·m³/s | ≤5×10⁻¹² |
| Refractoriness | °C | >2000 |
| Chemical Stability (HCl) | mg/cm² | ≤0.1 (1:9 HCl) |
| Chemical Stability (NaOH) | mg/cm² | ≤0.1 (10% NaOH) |
| Certifications | – | CE, RoHS |
| Transport Information | – | UN 1566 6.1/PG 2 |
| Trademark | – | Coraynic |
| Origin | – | China |
## Standard & Custom Crucible Dimensions
### Crucible Size Range
| Parameter | Standard Range | Custom Range |
|———-|—————-|————–|
| Outer Diameter (OD) | 10 – 150 mm | 5 – 300 mm |
| Inner Diameter (ID) | 5 – 140 mm | 3 – 280 mm |
| Height | 5 – 200 mm | 5 – 500 mm |
| Wall Thickness | 1 – 20 mm | 0.5 – 30 mm |
| Capacity | 5 ml – 2000 ml | Up to 10,000 ml+ |
### Tolerance
| Parameter | Tolerance |
|———-|———–|
| Outer Diameter (OD) | ±0.5% |
| Inner Diameter (ID) | ±0.5% |
| Height | ±0.1 mm |
| Concentricity | <0.05 mm |
| Wall Thickness Uniformity | ±0.1 mm |
### Custom Configurations
| Feature | Options |
|———|———|
| **Shape** | Cylindrical, conical, tapered, stepped |
| **Bottom** | Flat bottom, round bottom, pointed bottom |
| **Lid** | Without lid, flat lid, domed lid, hermetic sealing lid |
| **Rim** | Plain rim, flanged rim, reinforced rim |
| **Spout** | Pouring spout, angled spout |
| **Internal Features** | Stepped inner diameter, baffle plates, grooves |
| **Metallization** | MoMn + Ni/Au plated rim or base |
| **Marking** | Laser engraved lot number / purity grade |
## Applications
### 1. Precious & Rare Metal Melting
– **Platinum (Pt), Palladium (Pd), Gold (Au), Silver (Ag)** – no contamination, no wetting
– **Rhodium (Rh), Iridium (Ir), Ruthenium (Ru)** – high-purity casting
– **Rare earth metals** – neodymium, samarium, dysprosium
### 2. Semiconductor Crystal Growth
– **Gallium Arsenide (GaAs)** – LEC, VGF, VB processes
– **Indium Phosphide (InP)** – thermal uniformity
– **Silicon Carbide (SiC)** – high-temperature stability
– **Cadmium Telluride (CdTe)** – radiation detector substrates
### 3. Nuclear Material Processing
– **Uranium (U), Plutonium (Pu)** melting and alloying
– **Thorium (Th)** processing
– **Nuclear fuel matrix** – UO₂, MOX
– **Neutron reflectors and moderators**
### 4. Specialty Metallurgy
– **Titanium (Ti), Zirconium (Zr)** melting
– **Superalloys** – Inconel, Hastelloy
– **Molybdenum (Mo), Tantalum (Ta)** processing
### 5. High-Temperature Research & Development
– **Glaze melting** – ceramic glaze formulation
– **Glass melting** – specialty optical glass
– **Alkali fusion** – sample preparation for analytical chemistry
– **Induction furnace** – reflective screens, crucible liners
### 6. Additional Applications
– **Medical devices** – gas laser cavities, X-ray tube components
– **Aerospace** – rocket nozzle refractory inserts
– **Telecom infrastructure** – high-power RF package heat sinks
– **Optoelectronics** – laser diode manufacturing fixtures
## Why Choose Coraynic Technology?
– **Specialist in BeO Ceramics:** 10+ years experience in beryllium oxide processing and metallization.
– **Vertically Integrated Manufacturing:** From high-purity BeO powder pressing to CNC grinding, metallization, and final inspection – all in-house.
– **Custom Engineering:** Our ceramic engineers work with you to design crucible geometry optimized for your melt furnace, thermal profile, and material compatibility.
– **Precision Machining:** CNC cylindrical grinding, ultrasonic machining, laser cutting/drilling – tolerances down to ±0.01 mm.
– **Quality Assurance:** 100% inspection – ICP plasma spectrometer, laser particle analyzer, universal tool microscope, surface roughness tester, helium leak detector.
– **Proven Track Record:** Supplier to state-owned defense enterprises, semiconductor crystal growers, and precious metal refineries.
– **Compliance:** CE, RoHS, REACH, ITAR compliant. Full Safety Data Sheet (SDS) and material traceability provided with every shipment.
– **Safe Handling:** UN 1566 6.1/PG 2 certified packaging. Leak-proof, sealed containers. No mixing with acids/oxidizers. Transport follows prescribed routes.
> **Contact our crucible engineering team:**
> **Email:** sales@coraynic.com
> **Phone:** +86 187 61951906
> **Request a quote:** www.coraynic.com/contactus.html
> *Response within 4 hours · RFQ sample available · 98% on-time delivery*
## Safe Handling & Compliance (Mandatory)
Beryllium Oxide products are engineered for **professional/industrial use only**. Coraynic Technology provides a **comprehensive Safety Data Sheet (SDS)** with every shipment.
| Hazard | Precaution |
|——–|————|
| Inhalation of dust/fumes | Use with adequate ventilation / local exhaust. Wear appropriate PPE (N95 respirator, gloves, safety glasses). |
| Skin contact | Remove contaminated clothing. Rinse with plenty of running water. |
| Eye contact | Lift eyelids, rinse with water or saline. Seek medical attention. |
| Ingestion | Drink plenty of warm water, induce vomiting. Seek immediate medical attention. |
| Transport | UN 1566 6.1/PG 2. Do not mix with acids, oxidizers, food. Avoid exposure to rain, high temperature. |
**⚠️ Chronic exposure to beryllium dust can cause serious lung disease. Never machine, grind, or modify BeO ceramics without proper engineering controls and respiratory protection. Coraynic follows international beryllium safe handling protocols.**
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**© 2025 Coraynic Technology Limited – Your reliable advanced ceramic material partner.**
*All technical data are based on 99.5% BeO grade at room temperature. Custom specifications welcome. Safety Data Sheet (SDS) available upon request. Beryllium Oxide products are intended for professional industrial use only.*
